/*-
 * PDUToText.java
 *
 * $LastChangedBy:  $
 * $LastChangedRevision:  $
 * $LastChangedDate:  $
 * $HeadURL: $
 *
 * Copyright (c) 2008, Stein Gunnar Bakkeby
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Stein Gunnar Bakkeby nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.googlecode.attention.intention.tools;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import com.googlecode.attention.PDUEntry;
import com.googlecode.attention.SMSEntry;




public class PDUToText {
  
  private String fileName;
  private boolean hasSMSCInfo = true;
  private boolean removeDuplicates = false;
  private String printPattern = "%a?(, )%scts[yyyy.MM.dd - hh:mm:ss]\n%m\n";
  private String patternSeparator = " | ";

  public String readFile(final String fileName) {
    final File file = new File(fileName);
    StringBuilder sb = null;
    if (!file.exists()) {
      System.out.println("Error: The file \"" + fileName + "\" does not exist.");
    } else if (!file.isFile()) {
      System.out.println("Error: \"" + fileName + "\" is a directory.");
    } else if (!file.canRead()) {
      String userName = "";
      try {
        userName = " " + System.getProperty("user.name");
      } catch (SecurityException ignored) {}
      System.out.println("Error: The user" + userName
          + " does not have read access to the file \"" + fileName + "\"");
    } else {
      try {
        final BufferedReader reader = new BufferedReader(new FileReader(file));
        sb = new StringBuilder((int)file.length());
        try {
          String line;
          while ((line = reader.readLine()) != null) {
            sb.append(line + '\n');
          }
        } catch (IOException e) {
          System.out.println("Error while reading \"" + fileName + "\", error cause was: "
                            + e.getMessage());
        }
      } catch (FileNotFoundException e) {
        /* Should never happen with the checks above */
        System.out.println("Error, the file \"" + fileName + "\" was not found.");
      }
    }
    return (sb != null ? sb.toString() : null);
  }
  
  public void parseArguments(final String[] args) {
    for (int i = 0; i < args.length; i++) {
      final String arg = args[i].toLowerCase();
      if (arg.equals("-f") && i + 1 < args.length) {
        this.fileName = args[++i];
      } else if (arg.startsWith("--file=")) {
        this.fileName = arg.substring(7);
      } else if (arg.equals("+i")) {
        hasSMSCInfo = true;
      } else if (arg.equals("-i")) {
        hasSMSCInfo = false;
      } else if (arg.equals("-r")) {
        removeDuplicates = true;
      } else if (arg.equals("-pb")) {
        // TODO add phonebook option
      } else if (arg.startsWith("--phonebook=")) {
        // TODO add phonebook option        
      } else if (arg.equals("-p")) {
        this.printPattern = args[++i].replaceAll("\\\\n", "\n");
      } else if (arg.equals("-s")) {
        this.patternSeparator = args[++i];
      }
    }
  }
  
  public void doTheStuff(final String[] args) {
    parseArguments(args);
    if (fileName != null) {
      final String fileContent = readFile(fileName);
      if (fileContent != null) {
        SMSEntry[] entries = PDUEntry.parsePDUEntries(fileContent);
        if (removeDuplicates) {
          entries = SMSEntryUtils.removeDuplicates(entries);
        }
        SMSEntryUtils.printMessages(entries, null, hasSMSCInfo,
            printPattern, patternSeparator , System.out);
      }
    }
  }
  
  /**
   * 
   * @param args
   */
  public static void main(String[] args) {
    final PDUToText pduToText = new PDUToText();
    pduToText.doTheStuff(args);
  }
}
